Collapsible core.



2 SH SHEET 2- Patented 27,

Iii i INVENTOR.

WITNESS. I Y Q 9/ v 4 BY ATTORNEYS.

claims.

1 "our JOHN C. COLE, F GHICOIEE FALLS, MASSAGHUSETTS, .sgS 'lCwllflft '30 333K RUBBER COMPANY, OF GHIC OPEE FALLS, MASSAGH'USETTS, GORORATXGN 0F MASSA- CHUSETTS.

' COLLAFSIBLE cone.

To all whom it may concern:

Be it known that I, J 01m C. Gone, a citizen of the Unlted States of America, and

residing in Chicopee Falls, in the' county of Hampden and State of Massachusetts, have invented certain new and useful lrn proveinents in Collapsible Cores, of which the following is a specification.

This invention relates to improvements in collapsible cores and particularly to cores of this type for use in the nianniacture of the outer casings or shoes of pneumatic tires.-

An object of the invention is to provide in a collapsible core structure, having a solid annular supporting ring and a pinrality of core sectionsadapted to rest thereon, a plurality of segmental clamping plates adapted to be secured to said ring and to co operate therewith to hold the several core sections in abutting relation, said plates heing constructed for independent removal in a radially inward direction without removal of the securing means;

Other ob3ects and advantages Wlll appear in the detailed description and annexed Referring to the accompanying drawings illustrative of one way in which the invention may be put" to use Figure l is a front elevational view of the assembled collapsible core structure; Fig. 2 is an enlarged cross sectional View taken onthe line 22 ot Fig. 1 and looking inthe direction of the arrows; F g. 3 1s a rear elevational View of the core structure; and Fig. l isa view, generally similar to Fig. 2,"showing a modication of the invention,

Referring to these drawings in detail, 1

represents segmental core sections, of the cross-sectionalshap'e shown in Fig. 2, which have the usual "cored passages 2. Upon the outer portion of the assembled core sections the tire shoe is built up in the usual way. Extending radially inward from the outer ortions of the core sections are webs 8, the

i ases of whichare formed with finished are- 'shaged surfaces i. A solid ring 5 is formed wit a part which underlies the core sections 1 and has a'finishecl peripheral surface to,

receive the surfaces at. ll ihe all of the" lat- Application filed Deceiiiber 18, 1915. Serial Ho. $23,693.

ter rest on the peripheral surface of ring 5, the several sections 3. exactly abut with one another as shown at 6, so that a smooth broken annular ring surface is provided for the formation of v 5 is also formed flange which has the inner side thereof, The upper surface 8 of this groove is inclined to the axis of the 5 and is adapted to engage a siniilarly inclined surface 9 on web 3. It will be obvious that as the'core sections 1 are wi h an upstanding side- ;forced laterally action of the ire -ned surfaces 8 and 9 will force the core sections 11. downwfii'dly, so that the sin-race. e engage the peripheral surface of ring 5. To s I 0 force the core sections along the ring and to thereafter hold the several sections to the ring in abutting relation, a plurality of segmental plates 11 are employed, asbest shown in Fig. 1. Bolts 12, threaded into ring 5, pass loosely through slots 13in plates 11 and hold the latter to the ring. The inner faces of the plates 1-1 have arc-shaped.- projections 14 with tapered sides, which are adapted to engage in arc-shaped grooves 15 in the webs 3. The grooves 15 also have tapered sides, and the eoaction of projections 1e therewith assists in drawing the core sections down upon ring 5. The slo s 13in each plate 11 are parallel and the length of the plate, asshown in Fig. l, is such that any one thereof may be withdrawn radially inward. bolts 19; but simply to loosen them sun ciently to permit the withdrawal of the projections 14 from grooves 15. y

The modified structure shown in Fig. l is generally similar to that already described. In place of plates 11, however, other segmental plates 16 are used which have inwardly inclined upper portions 17. The

"latter engage an inclined surface 18 on the side face of the web 3 for a purpose analogous to that already described. The plates 16 are otherwise similar to the plates 11.

In practice, therore with the tire shoe circular groove '3 out lt isnot necessary to remove the the tire body. The ring 1 Bil long the ringo the co lit).

nixed that 3 no eon iruction shown in .d With '1 if 2, tle surfaces and 21 the ring and plat '1 dept-3d to perform 2' H I is desirasi' ion the mold the 'eore ier than from the eonstru n in r. 1g t 'orni d outstanding on core :tiorn the up which. is araged 3-91 the mold.

kl Tr) i core so tha i; the

int: would i onsequencly, r ng :ore'seetirms aerurately ed. it i the ring:

tions and to receive l the the. :er the role arms eonunonly .ch cores to supin a machine. With ioedi the extenagainst ,1 against the more J which are loved from ha The bolts 12 are n t; l 10:1 Pom mon, hat 1p loosened a slight amount. then he drawn radially the ring 53 may 'nterior of i Ltii'ili 01 l ne 1 from sihle core struc- .llQil is charactertely assembled itis recogin a rapid inod i tira r" particular innnmnaunt V ithout scope is lined by the ap than by the L'ol preierrwl -tpeerl'io hinatioin a plurali atively to one another that each thereof may he withdrawn independently of the other wirhout removingvsaid devices from said rl'eollapsihle (core, con'iprising in com-- 'iination, a plurality of segment shaped core adapted to'ahut with one another an annular core ring, supporting 1 for said sections having a peripheral Face and an upstanding flange adapted to hold said sections against radial and lateral moven'ient respectively, and means to rlainp said sections against said flange, comprising, a plurality of segment shaped plates each formedwith parallel slots and seruring devires extending through said slots into said supporting ring, said plates constructed and arranged for independent withdrawal radially without removing said devices from the supporting ring.

3r collapsible core, comprising, in comhinat-ion, plurality of segment shaped core sections adapted to abut with one another to form an annular core ring, a solid ring hav- 100 iug a peripheral surfaceadapted to support said sections and an upstanding" flange to engage one face of said sections. a groove 'liorn'ied in said flange, heads formed on said sect-ions, said groove and heads formed with 105 l le inclined surfaces a (lapted when the sections areunoved late-ally. along said ring to force the sections downwardly upon said surface and into precise mutually engagea ahuttingr relation, and means to laterally 110 more said sections comprising a series of segment shaped plates ar'h formed with pa rallel slots, securing" devires on said ring and extending through said slots. whereby said pla speeto said ring without. renaming the se- I .1 devices thereon.

i. A roll r apsihle roux romprising. in comty of segment shaped eore seetions adapted to abut with ne another to form an annular rore ring. a solid ring having a part arraugiiai to completely underlie said sections and an upstanding flange toengage one side fare oi" said sections, mu

tuall v engageahle earn surtares formed on 1 5 said flange and sertions arranged on lateral movement of the se tions to draw the latter lownwardiy upon rid part and into accurate abutting relation with each other, and

means to more the sections l terally, com- 139 tes may he withdrawn radially with re- 1,189,192 &

prising, a series of segmental plates each laterally with respect to the ring to draw formed with parallel slots therein, inclined the sections downwardly upon said part, all

surfaces formed on the inner faces of said constructed and arranged for independent 10' plates adapted to engage other inclined surremoval of said plates in a radial direction faces on said sections, and bolts threaded WltllOllt removal of said bolts.

into said ring and passing loosely through said slots, whereby the plates may be moved JUHN C. GOLE. r 

